Mozilla: Use-after-free in HTML5 string parser (MFSA 2016-23)
Published Mar 13, 2016
8.8
HIGHCVSS 3.0
EPSS 30.95%
Description
Integer underflow in the nsHtml5TreeBuilder class in the HTML5 string parser in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) by leveraging mishandling of end tags, as demonstrated by incorrect SVG processing, aka ZDI-CAN-3545.
Affected products
No data.
Configuration 2
- ≤ 44.0.2
- 38.0
- 38.0.1
- 38.0.5
- 38.1.0
- 38.1.1
- 38.2.0
- 38.2.1
- 38.3.0
- 38.4.0
- 38.5.0
- 38.5.1
- 38.6.0
- 38.6.1
- ≤ 38.6.0
No data.
Red Hat Enterprise Linux 5
firefox-0:38.7.0-1.el5_11
Fixed · RHSA-2016:0373
Red Hat Enterprise Linux 5
thunderbird-0:38.7.0-1.el5_11
Fixed · RHSA-2016:0460
Red Hat Enterprise Linux 6
firefox-0:38.7.0-1.el6_7
Fixed · RHSA-2016:0373
Red Hat Enterprise Linux 6
thunderbird-0:38.7.0-1.el6_7
Fixed · RHSA-2016:0460
Red Hat Enterprise Linux 7
firefox-0:38.7.0-1.el7_2
Fixed · RHSA-2016:0373
Red Hat Enterprise Linux 7
thunderbird-0:38.7.0-1.el7_2
Fixed · RHSA-2016:0460
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:38.7.0-1.el5_11 | Fixed | RHSA-2016:0373 |
| Red Hat Enterprise Linux 5 | thunderbird-0:38.7.0-1.el5_11 | Fixed | RHSA-2016:0460 |
| Red Hat Enterprise Linux 6 | firefox-0:38.7.0-1.el6_7 | Fixed | RHSA-2016:0373 |
| Red Hat Enterprise Linux 6 | thunderbird-0:38.7.0-1.el6_7 | Fixed | RHSA-2016:0460 |
| Red Hat Enterprise Linux 7 | firefox-0:38.7.0-1.el7_2 | Fixed | RHSA-2016:0373 |
| Red Hat Enterprise Linux 7 | thunderbird-0:38.7.0-1.el7_2 | Fixed | RHSA-2016:0460 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 30.95% (0.30946) | 98.21th | v5 (v2026.06.15) |
| Sep 22, 2026 | 30.95% (0.30946) | 98.18th | v5 (v2026.06.15) |
| Sep 21, 2026 | 26.75% (0.26748) | 97.98th | v5 (v2026.06.15) |
| Sep 6, 2026 | 30.95% (0.30946) | 98.14th | v5 (v2026.06.15) |
| Sep 5, 2026 | 26.75% (0.26748) | 97.94th | v5 (v2026.06.15) |
| Aug 30, 2026 | 30.95% (0.30946) | 98.13th | v5 (v2026.06.15) |
| Aug 28, 2026 | 26.75% (0.26748) | 97.93th | v5 (v2026.06.15) |
| Aug 24, 2026 | 30.95% (0.30946) | 98.11th | v5 (v2026.06.15) |
| Aug 23, 2026 | 26.75% (0.26748) | 97.92th | v5 (v2026.06.15) |
| Jun 15, 2026 | 31.05% (0.31046) | 98.03th | v5 (v2026.06.15) |
| May 5, 2026 | 86.45% (0.86455) | 99.42th | v4 (v2025.03.14) |
| Apr 12, 2025 | 87.63% (0.87630) | 99.44th | v4 (v2025.03.14) |
| Mar 17, 2025 | 85.51% (0.85511) | 99.33th | v4 (v2025.03.14) |
| Dec 12, 2024 | 95.99% (0.95993) | 99.55th | v3 (v2023.03.01) |
| Apr 12, 2024 | 96.26% (0.96256) | 99.50th | v3 (v2023.03.01) |
| Jan 4, 2024 | 96.24% (0.96236) | 99.41th | v3 (v2023.03.01) |
| Jun 14, 2023 | 96.31% (0.96310) | 99.29th | v3 (v2023.03.01) |
| Mar 26, 2023 | 96.56% (0.96561) | 99.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.64% (0.96642) | 99.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 49.05% (0.49052) | 98.64th | v2 (v2022.01.01) |
| Feb 4, 2022 | 49.05% (0.49052) | 98.17th | v2 (v2022.01.01) |
No CWE recorded.
References (30)
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00027.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00029.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00031.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00050.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00068.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00089.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00091.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00093.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00006.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00007.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00008.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://www.debian.org/security/2016/dsa-3510 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3520 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2016/mfsa2016-23.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRMThird Party Advisory
- http://www.securitytracker.com/id/1035215 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2917-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2917-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2917-3 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2934-1 vendor-advisoryx_refsource_UBUNTU
- http://zerodayinitiative.com/advisories/ZDI-16-198/ x_refsource_MISCThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-1960 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1246014 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1315576 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-1960
- https://security.gentoo.org/glsa/201605-06 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-1960
- https://www.exploit-db.com/exploits/42484/ exploitx_refsource_EXPLOIT-DB
- https://www.exploit-db.com/exploits/44294/ exploitx_refsource_EXPLOIT-DB
- https://www.mozilla.org/security/announce/2016/mfsa2016-23.html
Change history (0)
No recorded changes yet.